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Proceedings Paper

Negative refraction and covariance: the perils of P • k < 0
Author(s): Martin W. McCall
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Paper Abstract

By way of examples in vacuum and media, we show that the criterion used widely to determine the occurrence of negative phase velocity propagation is not covariant. A new covariant criterion is presented that reduces to the previous criterion in the rest frame of a medium. The new criterion requires calculation of the plane wave electromagnetic modes of a generalized medium in terms of the four-potential, Aν. Some of the subtleties of removing the gauge freedom inherent in Aν are highlighted.

Paper Details

Date Published: 4 September 2008
PDF: 13 pages
Proc. SPIE 7029, Metamaterials: Fundamentals and Applications, 70290Y (4 September 2008); doi: 10.1117/12.796495
Show Author Affiliations
Martin W. McCall, Imperial College of Science, Technology and Medicine (United Kingdom)


Published in SPIE Proceedings Vol. 7029:
Metamaterials: Fundamentals and Applications
Mikhail A. Noginov; Nikolay I. Zheludev; Allan D. Boardman; Nader Engheta, Editor(s)

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